from app import db
from flask_login import UserMixin
from werkzeug.security import generate_password_hash, check_password_hash

class User(UserMixin, db.Model):
    __tablename__ = 'users'
    
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(64), unique=True, nullable=False)
    email = db.Column(db.String(120), unique=True, nullable=False)
    password_hash = db.Column(db.String(128))
    role = db.Column(db.String(20), nullable=False)  # engineer, manager, integrator
    
    # 用户基本信息
    full_name = db.Column(db.String(64))
    phone = db.Column(db.String(20))
    department = db.Column(db.String(64))
    
    # 用户创建的项目
    projects = db.relationship('Project', backref='creator', lazy=True,
                             foreign_keys='Project.creator_id')
    
    def __init__(self, username, email, role, full_name=None, phone=None, department=None):
        self.username = username
        self.email = email
        self.role = role
        self.full_name = full_name
        self.phone = phone
        self.department = department
    
    def set_password(self, password):
        self.password_hash = generate_password_hash(password)
        
    def check_password(self, password):
        return check_password_hash(self.password_hash, password)
        
    def has_permission(self, permission):
        permissions = {
            'engineer': ['design', 'edit', 'view'],
            'manager': ['view', 'audit', 'approve'],
            'integrator': ['view', 'implement']
        }
        return permission in permissions.get(self.role, []) 